BigInt: BigInt(Number.MAX_SAFE_INTEGER) & BigInt(-Number.MAX_SAFE_INTEGER)

test/built-ins/BigInt/issafeinteger-true.js

+// Copyright (C) 2017 Robin Templeton. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+description: Throws a TypeError if BigInt is called with a new target
+esid: sec-bigint-constructor
+info: |
+  ...
+  3. If Type(prim) is Number, return ? NumberToBigInt(prim).
+  ...
+
+  NumberToBigInt ( number )
+
+  2. If IsSafeInteger(number) is false, throw a RangeError exception.
+
+features: [BigInt]
+---*/
+
+assert.sameValue(BigInt(Number.MAX_SAFE_INTEGER), 9007199254740991n);
+assert.sameValue(BigInt(-Number.MAX_SAFE_INTEGER), -9007199254740991n);